Hold on, you guys are talking about completely different things here.
PuckPoltergeist, my earlier post applies to the problem you reported; there's probably something wrong in code which will get replaced over the next week or so, so we're not planning to troubleshoot the existing tree yet.
Nanonyme, agd5f's post applies to you (re: problems getting the drm to run at all). I *think* the 6xx-rewrite mesa branch will use different code paths in the existing drm tree, so to some extent the same "wait until we get the code running in 6xx-rewrite" applies.
Right, managed to try it on 2.6.27. Works similar to the screenshots for a short time (read: several seconds) after which it locked X for me. When I tried to use magic sysrq to kill X, kernel hardlocked. Figures.
I guess I'll just have to wait a bit still. ^^